sfc: mark some unexported symbols as static

efx_default_channel_want_txqs() is only used in efx.c, while
 efx_ptp_want_txqs() and efx_ptp_channel_type (a struct) are only used
 in ptp.c.  In all cases these symbols should be static.

Fixes: 2935e3c38228 ("sfc: on 8000 series use TX queues for TX timestamps")
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
[ecree@solarflare.com: rewrote commit message]
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/sfc/efx.c

@@ -896,7 +896,7 @@ void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue)
 	mod_timer(&rx_queue->slow_fill, jiffies + msecs_to_jiffies(100));
 }
 
-bool efx_default_channel_want_txqs(struct efx_channel *channel)
+static bool efx_default_channel_want_txqs(struct efx_channel *channel)
 {
 	return channel->channel - channel->efx->tx_channel_offset <
 		channel->efx->n_tx_channels;

drivers/net/ethernet/sfc/ptp.c

@@ -366,7 +366,7 @@ bool efx_ptp_use_mac_tx_timestamps(struct efx_nic *efx)
 /* PTP 'extra' channel is still a traffic channel, but we only create TX queues
  * if PTP uses MAC TX timestamps, not if PTP uses the MC directly to transmit.
  */
-bool efx_ptp_want_txqs(struct efx_channel *channel)
+static bool efx_ptp_want_txqs(struct efx_channel *channel)
 {
 	return efx_ptp_use_mac_tx_timestamps(channel->efx);
 }
@@ -2146,7 +2146,7 @@ static int efx_phc_enable(struct ptp_clock_info *ptp,
 	return 0;
 }
 
-const struct efx_channel_type efx_ptp_channel_type = {
+static const struct efx_channel_type efx_ptp_channel_type = {
 	.handle_no_channel	= efx_ptp_handle_no_channel,
 	.pre_probe		= efx_ptp_probe_channel,
 	.post_remove		= efx_ptp_remove_channel,